Function fsub_fast 

pub unsafe fn fsub_fast<T: Copy>(a: T, b: T) -> T

🔬This is a nightly-only experimental API. (core_intrinsics)

Available on non-crate feature ferrocene_certified only.

Float subtraction that allows optimizations based on algebraic rules. Requires that inputs and output of the operation are finite, causing UB otherwise.

This intrinsic does not have a stable counterpart.